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|
Red [
Title: "Red console"
Author: ["Nenad Rakocevic" "Kaj de Vos"]
File: %console.red
Tabs: 4
Rights: "Copyright (C) 2012-2013 Nenad Rakocevic. All rights reserved."
License: {
Distributed under the Boost Software License, Version 1.0.
See https://github.com/dockimbel/Red/blob/master/BSL-License.txt
}
Purpose: "Just some code for testing Pygments colorizer"
Language: http://www.red-lang.org/
]
#system-global [
#either OS = 'Windows [
#import [
"kernel32.dll" stdcall [
AttachConsole: "AttachConsole" [
processID [integer!]
return: [integer!]
]
SetConsoleTitle: "SetConsoleTitleA" [
title [c-string!]
return: [integer!]
]
ReadConsole: "ReadConsoleA" [
consoleInput [integer!]
buffer [byte-ptr!]
charsToRead [integer!]
numberOfChars [int-ptr!]
inputControl [int-ptr!]
return: [integer!]
]
]
]
line-buffer-size: 16 * 1024
line-buffer: allocate line-buffer-size
][
#switch OS [
MacOSX [
#define ReadLine-library "libreadline.dylib"
]
#default [
#define ReadLine-library "libreadline.so.6"
#define History-library "libhistory.so.6"
]
]
#import [
ReadLine-library cdecl [
read-line: "readline" [ ; Read a line from the console.
prompt [c-string!]
return: [c-string!]
]
rl-bind-key: "rl_bind_key" [
key [integer!]
command [integer!]
return: [integer!]
]
rl-insert: "rl_insert" [
count [integer!]
key [integer!]
return: [integer!]
]
]
#if OS <> 'MacOSX [
History-library cdecl [
add-history: "add_history" [ ; Add line to the history.
line [c-string!]
]
]
]
]
rl-insert-wrapper: func [
[cdecl]
count [integer!]
key [integer!]
return: [integer!]
][
rl-insert count key
]
]
]
Windows?: system/platform = 'Windows
read-argument: routine [
/local
args [str-array!]
str [red-string!]
][
if system/args-count <> 2 [
SET_RETURN(none-value)
exit
]
args: system/args-list + 1 ;-- skip binary filename
str: simple-io/read-txt args/item
SET_RETURN(str)
]
init-console: routine [
str [string!]
/local
ret
][
#either OS = 'Windows [
;ret: AttachConsole -1
;if zero? ret [print-line "ReadConsole failed!" halt]
ret: SetConsoleTitle as c-string! string/rs-head str
if zero? ret [print-line "SetConsoleTitle failed!" halt]
][
rl-bind-key as-integer tab as-integer :rl-insert-wrapper
]
]
input: routine [
prompt [string!]
/local
len ret str buffer line
][
#either OS = 'Windows [
len: 0
print as c-string! string/rs-head prompt
ret: ReadConsole stdin line-buffer line-buffer-size :len null
if zero? ret [print-line "ReadConsole failed!" halt]
len: len + 1
line-buffer/len: null-byte
str: string/load as c-string! line-buffer len
][
line: read-line as c-string! string/rs-head prompt
if line = null [halt] ; EOF
#if OS <> 'MacOSX [add-history line]
str: string/load line 1 + length? line
; free as byte-ptr! line
]
SET_RETURN(str)
]
count-delimiters: function [
buffer [string!]
return: [block!]
][
list: copy [0 0]
c: none
foreach c buffer [
case [
escaped? [
escaped?: no
]
in-comment? [
switch c [
#"^/" [in-comment?: no]
]
]
'else [
switch c [
#"^^" [escaped?: yes]
#";" [if zero? list/2 [in-comment?: yes]]
#"[" [list/1: list/1 + 1]
#"]" [list/1: list/1 - 1]
#"{" [list/2: list/2 + 1]
#"}" [list/2: list/2 - 1]
]
]
]
]
list
]
do-console: function [][
buffer: make string! 10000
prompt: red-prompt: "red>> "
mode: 'mono
switch-mode: [
mode: case [
cnt/1 > 0 ['block]
cnt/2 > 0 ['string]
'else [
prompt: red-prompt
do eval
'mono
]
]
prompt: switch mode [
block ["[^-"]
string ["{^-"]
mono [red-prompt]
]
]
eval: [
code: load/all buffer
unless tail? code [
set/any 'result do code
unless unset? :result [
if 67 = length? result: mold/part :result 67 [ ;-- optimized for width = 72
clear back tail result
append result "..."
]
print ["==" result]
]
]
clear buffer
]
while [true][
unless tail? line: input prompt [
append buffer line
cnt: count-delimiters buffer
either Windows? [
remove skip tail buffer -2 ;-- clear extra CR (Windows)
][
append buffer lf ;-- Unix
]
switch mode [
block [if cnt/1 <= 0 [do switch-mode]]
string [if cnt/2 <= 0 [do switch-mode]]
mono [do either any [cnt/1 > 0 cnt/2 > 0][switch-mode][eval]]
]
]
]
]
q: :quit
if script: read-argument [
script: load script
either any [
script/1 <> 'Red
not block? script/2
][
print "*** Error: not a Red program!"
][
do skip script 2
]
quit
]
init-console "Red Console"
print {
-=== Red Console alpha version ===-
(only ASCII input supported)
}
do-console
|
